Just throwing in a bit of an idea on the whole Acrylic Allergy thing.
I too came out in blistered fingers, palms and backs of hands and itching like crazy to the point of distraction, initially I thought too it was a reaction from over exposure from my lengthy set of Acrylics I did the evening before (heat setting acrylic fast and like rock) BUT that night I began getting them on my feet, toes and soles. Itching like crazy, I couldn't work out how the acrylic filings had gotten to my feet.
The next morning I had a familiar feeling all over my body, the swelling, intense itching, blisters quickly forming.... I suffer PLME - polymorphic light eruption, in short I am allergic to the suns strong UVA and UVB rays, as we had no warmth build up just instant sunshine I reacted very quickly and with none of my usual build up warning signs.
Now going into gymnastics tonight almost half of the kids have exactly the same blistering itchy spots on their hands and some on both hands and feet, those that have been to the docs have been told it is a reaction to the sunshine due to the instant change, it is NOT prickly heat but most deff a reaction, you don't have to be sunbathing just walking around exposure can set it off and it can take up to 3 weeks to settle (I find this with my own allergy)
Anti histamines and a cream called Eurax both help.
So my idea is maybe don't settle for only the acrylic allergy thought BUT consider the weather too, give it 3weeks and for the cooler weather to come back and try acrylic again. It would be a shame to stop doing what you love or change your product when it could be weather based.
Lou, your reaction is identical to what I see last night and what's prompted me to write this, for what it's worth my allergy gets worse in the evenings when the temp cools a little and the constant desire to hairbrush my body is horrendous.
When I was younger I used to cover myself in cotton long sleeves and nothing stopped it or made it better, I just had to wait the 3weeks for it all to go down, the swelling to stop and the blisters to dry out.
I hope this helps someone at least.